[FileFormats.MOF] Use JSON3 to write files

Author: joaquimg

Project.toml

@@ -9,6 +9,7 @@ CodecZlib = "944b1d66-785c-5afd-91f1-9de20f533193"
 DataStructures = "864edb3b-99cc-5e75-8d2d-829cb0a9cfe8"
 ForwardDiff = "f6369f11-7733-5829-9624-2563aa707210"
 JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
+JSON3 = "0f8b85d8-7281-11e9-16c2-39a750bddbf1"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 MutableArithmetics = "d8a4904e-b15c-11e9-3269-09a3773c0cb0"
 NaNMath = "77ba4419-2d1f-58cd-9bb1-8ffee604a2e3"

src/FileFormats/MOF/write.jl

@@ -3,6 +3,7 @@
 #
 # Use of this source code is governed by an MIT-style license that can be found
 # in the LICENSE.md file or at https://opensource.org/licenses/MIT.
+using JSON3
 
 """
     Base.write(io::IO, model::FileFormats.MOF.Model)
@@ -29,8 +30,7 @@ function Base.write(io::IO, model::Model)
         objective = objective,
         constraints = constraints,
     )
-    indent = options.print_compact ? nothing : 2
-    Base.write(io, JSON.json(object, indent))
+    Base.write(io, JSON3.write(object))
     return
 end